EP1481558A1 - Procede et systeme d'uniformisation du rendu calorimetrique d'une juxtaposition de surfaces d'affichage - Google Patents
Procede et systeme d'uniformisation du rendu calorimetrique d'une juxtaposition de surfaces d'affichageInfo
- Publication number
- EP1481558A1 EP1481558A1 EP03718892A EP03718892A EP1481558A1 EP 1481558 A1 EP1481558 A1 EP 1481558A1 EP 03718892 A EP03718892 A EP 03718892A EP 03718892 A EP03718892 A EP 03718892A EP 1481558 A1 EP1481558 A1 EP 1481558A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screens
- rendering
- colorimetric
- correction
- video
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009877 rendering Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012937 correction Methods 0.000 claims abstract description 48
- 238000005070 sampling Methods 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 22
- 238000000926 separation method Methods 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000006870 function Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
Definitions
- the present invention relates to the display of an image or a sequence of images on several juxtaposed display screens, each display screen being controlled by an independent video processing chain.
- each display is controlled by a separate video channel so as to display a respective part of the video images.
- Each display can consist of a rear projection system, video projection, or even a solid screen such as a cathode ray tube, plasma or liquid crystal screen.
- each remote site being equipped with what is called a "telepresence wall" consisting of several juxtaposed screens and contiguous.
- each display is controlled by a separate video chain connected to a camera installed on the other remote site.
- the color rendering of a screen is subject to slow variations, notably due to the aging of certain elements of the display or of the video channel, which implies make such adjustments regularly. As these adjustments require the movement of an operator, it often happens that they are not made when they are necessary.
- the object of the present invention is to eliminate these drawbacks, without however replacing the manual adjustments which remain necessary to correct significant differences in color rendering between adjacent screens.
- this objective is achieved by providing a method for standardizing the colorimetric rendering of a display surface comprising at least two adjacent display screens, controlled respectively by video processing chains in which respective video streams pass.
- this method comprises, for each pair of screens adjacent to the display screens, the steps consisting in:
- the image data taken is obtained using a camera arranged astride the two screens of each pair of screens. adjacent.
- the analysis of the image data taken comprises the steps consisting in:
- the average color components of each measurement area are determined from the color components of each pixel of the measurement area.
- the sampling of image data is carried out with a periodicity of the order of a few minutes to a few tens of minutes.
- the law of correction applied by the correction member to the difference in colorimetric rendering is a law of the matrix type.
- the correction law applied by the correction member to the colorimetric rendering difference is an iterative type law with convergence criterion.
- the method according to the invention comprises a step of comparing the difference in color rendering with a predefined threshold, and if the difference in color rendering is greater than the threshold, no correction processing is applied to the video stream of one of the two video channels respectively driving the two screens of the pair of adjacent screens.
- the difference in color rendering is greater than the threshold for several consecutive periods, it comprises the emission of an alert signal indicating that manual adjustment of the video processing channels is necessary to standardize the color rendering of the display surface.
- the method according to the invention comprises steps of preserving a history of the colorimetric differences determined for each pair of display screens, of analyzing the history to establish a law of colorimetric drifts for each display screen.
- the invention also relates to a system for standardizing the colorimetric rendering of a display surface comprising at least two adjacent display screens, controlled respectively by video processing chains in which respective video streams pass.
- this system comprises a correction chain for rendering screen display colorimetric by area of separation between two adjacent screens, each correction chain comprising:
- a sensor placed astride the separation zone between the two screens, so as to provide image data of the images displayed on the two screens,
- - a calculation unit connected to the sensor and designed to periodically take image data from the image data supplied by the sensor, to analyze the image data taken and deduce from this analysis a difference in colorimetric rendering between the two screens,
- a correction device connected to the calculation device and designed to determine a processing to be applied to the video stream of one of the two video channels controlling the two screens respectively, by applying a predetermined correction law to the rendering gap colorimetric, and to apply this processing to the video stream, in order to standardize the colorimetric rendering of the display surface.
- the senor is a video camera.
- FIG. 1 represents a video image display system with two displays, equipped with the system according to the invention
- Figure 2 shows an image taken by the system sensor represented in FIG. 1, the colorimetric rendering of which is analyzed in accordance with the method according to the invention
- FIG. 3 illustrates in the form of a flowchart the method according to the invention
- FIG. 4 represents a display screen with n displays, equipped with the system according to the invention.
- Figure 1 shows a two-screen video image display system
- This system comprises two video channels each comprising a source of video images 1a, 1b connected to a display 3a, 3b, each display respectively driving one of the display screens 10a, 10b.
- the assembly consisting of a display 3a, 3b and a display screen 10a, 10b in fact represents a rear projection system, a video projection system, or even a solid screen such as a cathode-ray tube screen, plasma or liquid crystal.
- a sensor 7 which straddles the separation screens 12a of the two screens 10a, 10b, which transmits colorimetric measurements to a calculation unit 5 designed to determine a difference in colorimetric rendering between the two screens 10a, 10b.
- the calculation unit is connected to a correction unit 6 interposed in one of the video chains and designed to correct the color components of the video stream passing through the chain, as a function of the colorimetric rendering difference determined by the body. calculation 5.
- the correction member 6 is arranged between the video source 1b and the display 3b so as to modify the parameters of the color components of the video stream coming from the source 1b, before applying them to the display 3b.
- the sensor 7 is for example constituted by a video camera which transmits to the computing unit 5 a video stream, or periodically, a digital image.
- the calculating member 5 takes 21 at one or more images 11 from the video stream at regular intervals. Such an image is illustrated in FIG. 2.
- Each of these images represents a part of the separation zone between the two contiguous screens 10a, 10b, and a part of the images displayed respectively by the latter.
- the calculation unit analyzes the images taken by considering two areas of measure 13a, 13b distributed symmetrically on either side of the separation zone 12 between the two screens.
- the two measurement areas 13a, 13b are for example squares of pxp pixels, in the example of FIG. 2, 3 x 3 pixels.
- the processing carried out by the calculating member 5 does not need to be carried out continuously.
- a correction treatment carried out at a frequency of a few minutes to a few tens of minutes is sufficient.
- the analysis carried out by the calculation unit 5 consists in determining 22 for each pixel of each area 13a, 13b the respective values of the color components R (red), V (green), B (blue), according to the units used in the IT field. These values are for example determined in the form of 8-bit binary values.
- the values of the color components thus determined are then weighted and averaged 23 over all the pixels of each zone 13a, 13b, to obtain for each of these zones global color components, Ca R , Cay, Ca B and Cb R , Cby, Cb B.
- the calculation unit can also calculate an average of these values over several sampled images.
- the global components Ca, Cay, Ca B and Cb, Cby, Cb B obtained for each of the zones 13a and 13b are then compared 24 in pairs to determine a colorimetric difference between the two screens, this difference being made up of a value d 'deviation for each color component.
- correction unit 6 which, using a correction law f ( ⁇ C R , ⁇ Cv, ⁇ C B ) deduces 26 the correction processing to be applied to the video stream to be corrected, that is to say the video stream originating from the source lb in the example of FIG. 1, then it applies this processing.
- the correction law f ( ⁇ C R , ⁇ C V , ⁇ C B ) can be of the matrix or iterative type with convergence criterion.
- a matrix type correction law consists in applying the calculated colorimetric difference ( ⁇ C R , ⁇ C V , ⁇ C B ) or a function thereof to each pixel of the images of the video stream to be corrected.
- An iterative type correction law consists in applying the colorimetric rendering difference ( ⁇ C R , ⁇ C V , ⁇ C B ) to each pixel of the images of the video stream to be corrected, and in consecutive measurement of the new difference ( ⁇ C R ', ⁇ C V ', ⁇ C B '), to verify that it is much less than the difference previously measured, and to apply this new difference to all the pixels.
- the convergence criterion is therefore as follows: ⁇ C R ' ⁇ C R , ⁇ C V ' ⁇ C V , ⁇ C B ' ⁇ C B. This treatment is repeated until a difference in color rendering below a predefined threshold which can advantageously be the threshold of perception of the human eye is obtained. If the convergence criterion is not satisfied, this means that the iterative method is not appropriate and we then apply the matrix correction method.
- processing operations can be carried out in other unit systems, such as the YUV video unit system or the XYZ unit system used for the human eye.
- unit systems such as the YUV video unit system or the XYZ unit system used for the human eye.
- provision can be made to convert, using known transformation matrices, the values of the components into RGB in other unit systems which are better suited to the video chain to be corrected.
- the value of the deviations measured on each color component is compared with a predetermined respective threshold value, so as to be able to determine whether these deviations are acceptable by the correction member 6, that is to say s' they are not too important to be corrected by the latter. If these differences are incompatible with the correction possibilities available to the correction member 6, the correction member does not apply any correction to the video stream originating from the source 1b. If these deviations remain unacceptable for several consecutive measurement periods, the system emits an alert signal to indicate that manual intervention on the adjustment of the displays or the video channels is necessary. The system can for this purpose increment 27 a counter C and when the value of this counter exceeds 28 a certain threshold, the system emits the alert signal. Of course, if a correction is made, the value of the counter C is reset to zero.
- the system described with reference to FIG. 1 can be generalized to n display screens, as shown in FIG. 4.
- the display system comprises n display screens 10 (n being an integer greater than 2), each screen being controlled by a respective display 3.
- the correction system according to the invention comprises a measurement and colorimetric correction chain by separation line 12 between two adjacent screens.
- Each measurement and correction chain of rank i (i being an integer between 1 and n-1) comprises a sensor 7 positioned opposite a separation line 12 between two adjacent screens 10, of respective rows i and i +1, this sensor being coupled to a member 5 of colorimetric drift of rank i, the latter being connected to a correction member 6 of rank i, interposed in the video control chain of the display 3 of rank i + 1.
- This system therefore comprises n ⁇ 1 measurement and colorimetric correction chains, the displays 3 of rank 2 years being adjusted step by step from the screen lO of rank 1.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
- Spectrometry And Color Measurement (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Processing Of Color Television Signals (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0202911 | 2002-03-07 | ||
| FR0202911A FR2837056B1 (fr) | 2002-03-07 | 2002-03-07 | Procede et systeme d'uniformisation du rendu colorimetrique d'une juxtaposition de surfaces d'affichage |
| PCT/FR2003/000525 WO2003075581A1 (fr) | 2002-03-07 | 2003-02-18 | Procede et systeme d'uniformisation du rendu calorimetrique d'une juxtaposition de surfaces d'affichage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1481558A1 true EP1481558A1 (fr) | 2004-12-01 |
| EP1481558B1 EP1481558B1 (fr) | 2008-10-29 |
Family
ID=27763631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03718892A Expired - Lifetime EP1481558B1 (fr) | 2002-03-07 | 2003-02-18 | Procede et systeme d'uniformisation du rendu calorimetrique d'une juxtaposition de surfaces d'affichage |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US7489337B2 (fr) |
| EP (1) | EP1481558B1 (fr) |
| AT (1) | ATE413069T1 (fr) |
| AU (1) | AU2003222928A1 (fr) |
| DE (1) | DE60324392D1 (fr) |
| FR (1) | FR2837056B1 (fr) |
| WO (1) | WO2003075581A1 (fr) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2790421A1 (fr) * | 1999-03-01 | 2000-09-08 | Gemplus Card Int | Machine d'impression graphique pour support de memorisation de type carte, procede d'impression graphique desdits supports de memorisation et supports de memorisation |
| US8054382B2 (en) * | 2007-05-21 | 2011-11-08 | International Business Machines Corporation | Apparatus, method and system for synchronizing a common broadcast signal among multiple television units |
| JP2010014843A (ja) * | 2008-07-02 | 2010-01-21 | Sony Corp | 表示装置 |
| US8477241B2 (en) * | 2009-05-29 | 2013-07-02 | Hewlett-Packard Development Company, L.P. | Multi-projector system and method |
| CN101778246B (zh) | 2010-01-29 | 2014-04-02 | 华为终端有限公司 | 多画面视频图像处理方法和装置 |
| EP2643966B1 (fr) * | 2010-11-24 | 2016-03-16 | Echostar Ukraine LLC | Recepteur-projecteur de television, capable de compenser les propriétés de la surface de projection |
| TWI462583B (zh) * | 2011-05-27 | 2014-11-21 | Qisda Corp | 可根據定位訊號顯示畫面之電視牆系統 |
| US8704895B2 (en) * | 2011-08-29 | 2014-04-22 | Qualcomm Incorporated | Fast calibration of displays using spectral-based colorimetrically calibrated multicolor camera |
| US8872850B2 (en) | 2012-03-05 | 2014-10-28 | Microsoft Corporation | Juxtaposing still and dynamic imagery for cliplet creation |
| CN104486975B (zh) | 2012-06-12 | 2018-05-08 | 实耐宝公司 | 库存控制系统 |
| US8830392B2 (en) * | 2013-01-16 | 2014-09-09 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Splice display |
| WO2014176511A1 (fr) * | 2013-04-26 | 2014-10-30 | Event Show Productions, Inc. | Moniteurs vidéo portables pour représentations théâtrales |
| CN103985371B (zh) * | 2014-05-31 | 2017-03-15 | 深圳市华星光电技术有限公司 | 柔性拼接显示装置 |
| KR20160004123A (ko) * | 2014-07-02 | 2016-01-12 | 삼성전자주식회사 | 이미지 처리 장치, 및 이의 동작 방법 |
| KR20160058498A (ko) * | 2014-11-17 | 2016-05-25 | 삼성전자주식회사 | 멀티 디스플레이 장치의 레이아웃을 검출하는 장치 및 방법 |
| KR20160078023A (ko) * | 2014-12-24 | 2016-07-04 | 삼성전자주식회사 | 디스플레이 제어 장치 및 디스플레이 제어 방법 |
| JP6554887B2 (ja) * | 2015-04-14 | 2019-08-07 | 富士ゼロックス株式会社 | 画像生成装置、評価システムおよびプログラム |
| JP6594170B2 (ja) * | 2015-11-12 | 2019-10-23 | キヤノン株式会社 | 画像処理装置、画像処理方法、画像投影システムおよびプログラム |
| US11012661B2 (en) * | 2017-05-30 | 2021-05-18 | Sharp Nec Display Solutions, Ltd. | Display device, display method, and program |
| JP2019004401A (ja) * | 2017-06-19 | 2019-01-10 | セイコーエプソン株式会社 | プロジェクションシステム、プロジェクター及びプロジェクションシステムの制御方法 |
| US20190180475A1 (en) * | 2017-12-08 | 2019-06-13 | Qualcomm Incorporated | Dynamic camera calibration |
| US20210020124A1 (en) * | 2018-03-15 | 2021-01-21 | Nec Display Solutions, Ltd. | Position detection device, display device, and method for detecting position of display device |
| US12555379B2 (en) * | 2023-07-17 | 2026-02-17 | Lenovo (Singapore) Pte. Ltd. | Computer vision to determine when video conference participant is off task |
Family Cites Families (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3334211B2 (ja) * | 1993-02-10 | 2002-10-15 | 株式会社日立製作所 | ディスプレイ |
| JPH0775137A (ja) * | 1993-08-31 | 1995-03-17 | Sony Corp | 立体映像用めがね |
| US5883476A (en) * | 1994-06-09 | 1999-03-16 | Hitachi, Ltd. | Convergence correction system with recovery function and display apparatus using the same |
| JP3735158B2 (ja) * | 1996-06-06 | 2006-01-18 | オリンパス株式会社 | 画像投影システム、画像処理装置 |
| IL119259A (en) * | 1996-09-17 | 2000-12-06 | Comview Graphics Ltd | Electro-optical display apparatus and method of using same |
| US6043797A (en) * | 1996-11-05 | 2000-03-28 | Clarity Visual Systems, Inc. | Color and luminance control system for liquid crystal projection displays |
| WO1998028919A1 (fr) * | 1996-12-24 | 1998-07-02 | Mitsubishi Denki Kabushiki Kaisha | Appareil et procede de mesure des caracteristiques colorimetriques |
| US6020868A (en) * | 1997-01-09 | 2000-02-01 | Rainbow Displays, Inc. | Color-matching data architectures for tiled, flat-panel displays |
| GB9713227D0 (en) * | 1997-06-23 | 1997-08-27 | Seos Displays Ltd | Multi-channel visual display apparatus |
| BE1011580A5 (nl) * | 1997-12-01 | 1999-11-09 | Barco Naamloze Vennootschap | Werkwijze en inrichting voor het regelen van een of meer projectoren. |
| US6611241B1 (en) * | 1997-12-02 | 2003-08-26 | Sarnoff Corporation | Modular display system |
| US6333768B1 (en) * | 1998-02-24 | 2001-12-25 | Sony Corporation | Convergence calibration in video displays with signal level control |
| US6340976B1 (en) * | 1998-04-15 | 2002-01-22 | Mitsubishi Denki Kabushiki Kaisha | Multivision system, color calibration method and display |
| US6456339B1 (en) * | 1998-07-31 | 2002-09-24 | Massachusetts Institute Of Technology | Super-resolution display |
| US6310650B1 (en) * | 1998-09-23 | 2001-10-30 | Honeywell International Inc. | Method and apparatus for calibrating a tiled display |
| US7051287B1 (en) * | 1998-12-14 | 2006-05-23 | Canon Kabushiki Kaisha | Display device with frame reduction, display control method thereof, and storage medium |
| US6570623B1 (en) * | 1999-05-21 | 2003-05-27 | Princeton University | Optical blending for multi-projector display wall systems |
| JP3632505B2 (ja) * | 1999-06-18 | 2005-03-23 | セイコーエプソン株式会社 | 画像表示装置 |
| US6956543B2 (en) * | 2000-02-07 | 2005-10-18 | Sony Corporation | Multiple-screen simultaneous displaying apparatus, multi-screen simultaneous displaying method, video signal generating device, and recorded medium |
| EP1303992A2 (fr) * | 2000-07-17 | 2003-04-23 | Matsushita Electric Industrial Co., Ltd. | Appareil de traitement du signal image, appareil d'affichage d'images, appareil d'affichages multiples et procede de reglage de la de chromaticite destine a etre utilise dans ledit appareil d'affichages multiples |
| JP3497805B2 (ja) * | 2000-08-29 | 2004-02-16 | オリンパス株式会社 | 画像投影表示装置 |
| JP2002116500A (ja) * | 2000-10-05 | 2002-04-19 | Olympus Optical Co Ltd | 画像投影表示装置 |
| US6864921B2 (en) * | 2000-10-17 | 2005-03-08 | Sony Corporation | Display control system for controlling a display screen formed of multiple display units |
| US6864894B1 (en) * | 2000-11-17 | 2005-03-08 | Hewlett-Packard Development Company, L.P. | Single logical screen system and method for rendering graphical data |
| EP1385340A3 (fr) * | 2002-07-23 | 2005-08-10 | NEC Viewtechnology, Ltd. | Méthode de traitement d'image pour un projecteur |
| KR100516615B1 (ko) * | 2003-04-22 | 2005-09-22 | 엘지전자 주식회사 | 프로젝션 티브이의 오토 컨버젼스 에러 방지장치 |
| US7330164B2 (en) * | 2003-08-25 | 2008-02-12 | Thomson Licensing | Video controlled detector sensitivity |
| US7252387B2 (en) * | 2005-03-21 | 2007-08-07 | Mitsubishi Electric Research Laboratories, Inc. | System and method for mechanically adjusting projector pose with six degrees of freedom for image alignment |
| US7334901B2 (en) * | 2005-04-22 | 2008-02-26 | Ostendo Technologies, Inc. | Low profile, large screen display using a rear projection array system |
-
2002
- 2002-03-07 FR FR0202911A patent/FR2837056B1/fr not_active Expired - Fee Related
-
2003
- 2003-02-18 EP EP03718892A patent/EP1481558B1/fr not_active Expired - Lifetime
- 2003-02-18 AT AT03718892T patent/ATE413069T1/de not_active IP Right Cessation
- 2003-02-18 WO PCT/FR2003/000525 patent/WO2003075581A1/fr not_active Ceased
- 2003-02-18 DE DE60324392T patent/DE60324392D1/de not_active Expired - Lifetime
- 2003-02-18 AU AU2003222928A patent/AU2003222928A1/en not_active Abandoned
- 2003-02-18 US US10/505,987 patent/US7489337B2/en not_active Expired - Fee Related
-
2009
- 2009-02-04 US US12/365,432 patent/US7940329B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03075581A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003075581A1 (fr) | 2003-09-12 |
| EP1481558B1 (fr) | 2008-10-29 |
| FR2837056A1 (fr) | 2003-09-12 |
| US7489337B2 (en) | 2009-02-10 |
| US7940329B2 (en) | 2011-05-10 |
| FR2837056B1 (fr) | 2004-09-17 |
| AU2003222928A1 (en) | 2003-09-16 |
| US20050117053A1 (en) | 2005-06-02 |
| DE60324392D1 (de) | 2008-12-11 |
| ATE413069T1 (de) | 2008-11-15 |
| US20090174780A1 (en) | 2009-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1481558B1 (fr) | Procede et systeme d'uniformisation du rendu calorimetrique d'une juxtaposition de surfaces d'affichage | |
| EP0940996B1 (fr) | Méthode, dispositif, ASIC et leur utilisation pour l'évaluation objective de la qualité vidéo | |
| US6496221B1 (en) | In-service video quality measurement system utilizing an arbitrary bandwidth ancillary data channel | |
| US20120256901A1 (en) | Method and device for displaying an indication of the quality of the three-dimensional data for a surface of a viewed object | |
| EP0840882A2 (fr) | Procede et dispositif de mesure de la couleur | |
| KR101713684B1 (ko) | 시정상태의 변화에 강인한 복합 필터링 방식의 감시카메라 및 그것이 적용된 영상감시시스템 | |
| US20050219362A1 (en) | Quality analysis in imaging | |
| FR2805429A1 (fr) | Procede de controle de la qualite numeriques distribuees par detection de faux contours | |
| FR2939592A1 (fr) | Procede et dispositif de communication par visioconference. | |
| FR2648954A1 (fr) | Systeme d'assistance au reglage des tubes cathodiques | |
| EP2098072A2 (fr) | Dispositif pour permettre une communication par visioconference et procede de communication associe | |
| EP2905771A1 (fr) | Procédé et dispositif pour verifier un affichage d'images sur un écran électronique | |
| FR2969353A1 (fr) | Procede de realisation d'une image panoramique a partir d'une sequence video et appareil de mise en oeuvre. | |
| JP2020509661A (ja) | 視程状態の変化にロバストな複合フィルタリング基盤のオートフォーカシング機能を有する監視カメラ及びそれが適用された映像監視システム | |
| US9264688B2 (en) | Video processing method and apparatus for use with a sequence of stereoscopic images | |
| EP1397001B1 (fr) | Mesure automatique de paramètres vidéo | |
| CA2491660A1 (fr) | Procede et dispositif de selection de la nuance d'un teintier dentaire | |
| WO2011070158A1 (fr) | Procede d'estimation de la qualite video a une resolution quelconque | |
| FR2937209A1 (fr) | Correction de deviation de blanc dans une image captee | |
| US20050105802A1 (en) | Method and an arrangement for objective assessment of video quality | |
| EP0757498A1 (fr) | Procédé pour correction des défauts de chromaticité et de luminance d'un écran matriciel et écran matriciel et circuit mettant en oeuvre un tel procédé | |
| FR3094139A1 (fr) | Dispositif, système et procédé de capture d’image | |
| FR2708105A1 (fr) | Appareil pour la détermination en continu de paramètres colorimétriques. | |
| de Telecomunicaciones Visuales | METRICS FOR THE OBJECTIVE QUALITY ASSESSMENT IN HIGH DEFINITION DIGITAL VIDEO | |
| FR2749120A1 (fr) | Procede de correction de la reponse d'un dispositif de visualisation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20040812 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GACHIGNARD, OLIVIER Inventor name: HOUMEAU, FRANEOIS Inventor name: LEYRELOUP, ALAIN |
|
| 17Q | First examination report despatched |
Effective date: 20061012 |
|
| 17Q | First examination report despatched |
Effective date: 20061012 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAL | Information related to payment of fee for publishing/printing deleted |
Free format text: ORIGINAL CODE: EPIDOSDIGR3 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
| REF | Corresponds to: |
Ref document number: 60324392 Country of ref document: DE Date of ref document: 20081211 Kind code of ref document: P |
|
| RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: CHARTOLEAUX KG LIMITED LIABILITY COMPANY |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090129 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090209 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090330 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 |
|
| BERE | Be: lapsed |
Owner name: FRANCE TELECOM Effective date: 20090228 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090129 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090228 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| 26N | No opposition filed |
Effective date: 20090730 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090228 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090228 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090228 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090218 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090430 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081029 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20120203 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20120229 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20120127 Year of fee payment: 10 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20130218 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20131031 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 60324392 Country of ref document: DE Effective date: 20130903 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130228 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130218 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130903 |